Test Results
S. NoParameterInput (ppb/ppm)Output (ppb/ppm)% ReductionMax Allowable (ppb/ppm)Standard
1Total Chromium as Cr282 ppbBDL<20 ppb>92.90%50 ppbIS10500:2023
2Copper as Cu2740 ppbBDL<20 ppb>99.27%50 ppbIS10500:2023
3Arsenic as As47 ppb3.0 ppb93.61%10 ppbIS10500:2023
4Cadmium as Cd30.8 ppb7.0 ppb77.27%3 ppbIS10500:2023
5Mercury as Hg5.5 ppbBDL<1 ppb>82%1 ppbIS10500:2023
6Aluminium as Al109 ppb28 ppb74.31%30 ppbIS10500:2023
7Barium as Ba9307 ppbBDL<500 ppb>94.62%700 ppbIS10500:2023
8Nickel as Ni94 ppbBDL<20 ppb>78.72%20 ppbIS10500:2023
9Iron as Fe3200 ppbBDL<100 ppb>96.87%1000 ppbIS10500:2023
10Silver as Ag95 ppbBDL<10 ppb>89.47%100 ppbIS10500:2023
11Lead as Pb161 ppb26 ppb83.85%10 ppbIS10500:2023
12Zinc as Zn95 ppbBDL<50 ppb>95%10 ppmIS10500:2023
13Fluoride as F2 ppm0.55 ppm75.23%1.0 ppmIS10500:2023
14Chloramine as Cl23.6 ppm<0.1 ppm>97.22%0.5 ppmNSF/ANSI 42
15Chlorine as Cl22 ppm<0.1 ppm>95.0%Min. 50% reductionNSF/ANSI 42
16Aldrin0.247 ppbND<0.01 ppb>95.95%0.1 ppbIS16240:2023
17Dieldrin0.242 ppbND<0.01 ppb>95.87%0.1 ppbIS16240:2023
18Alpha-HCH0.252 ppbND<0.01 ppb>96.03%0.1 ppbIS16240:2023
19Beta-HCH0.242 ppbND<0.01 ppb>95.87%0.1 ppbIS16240:2023
20Gamma-HCH0.261 ppbND<0.01 ppb>96.17%0.1 ppbIS16240:2023
21Delta-HCH0.25 ppbND<0.01 ppb>96.00%0.1 ppbIS16240:2023
22Chlorpyrifos0.242 ppbND<0.01 ppb>95.87%0.1 ppbIS16240:2023
23DDE-op0.255 ppbND<0.01 ppb>96.08%0.1 ppbIS16240:2023
24DDE-pp0.264 ppbND<0.01 ppb>96.21%0.1 ppbIS16240:2023
25DDD-op0.252 ppbND<0.01 ppb>96.03%0.1 ppbIS16240:2023
26DDD-pp0.25 ppbND<0.01 ppb>96.00%0.1 ppbIS16240:2023
27Endrin0.25 ppbND<0.01 ppb>96.00%0.1 ppbIS16240:2023
28DDT-pp0.25 ppbND<0.01 ppb>96.00%0.1 ppbIS16240:2023
29Endosulphan-Alpha0.261 ppbND<0.01 ppb>96.17%0.1 ppbIS16240:2023
30Endosulphan-Beta0.245 ppbND<0.01 ppb>95.92%0.1 ppbIS16240:2023
31Endosulphan Sulphate0.24 ppbND<0.01 ppb>95.83%0.1 ppbIS16240:2023
32Parathion Methyl0.261 ppbND<0.01 ppb>96.17%0.1 ppbIS16240:2023
33Phorate0.242 ppbND<0.01 ppb>95.87%0.1 ppbIS16240:2023
34Atrazine0.263 ppbND<0.01 ppb>96.20%0.1 ppbIS16240:2023
352,4-D0.261 ppbND<0.01 ppb>96.17%0.1 ppbIS16240:2023
36Ethion0.258 ppbND<0.01 ppb>96.12%0.1 ppbIS16240:2023
37Isoproturon0.246 ppbND<0.01 ppb>95.93%0.1 ppbIS16240:2023
38Malathion0.245 ppbND<0.01 ppb>95.92%0.1 ppbIS16240:2023
39Methyl Parathion0.261 ppbND<0.01 ppb>96.17%0.1 ppbIS16240:2023
40Monocrotophos0.331 ppbND<0.01 ppb>95.95%0.1 ppbIS16240:2023
41Alachlor0.05 ppmND<0.001 ppm>98%0.002 ppmNSF/ANSI 53
42Atrazine0.1 ppmND<0.003 ppm>97%0.003 ppmNSF/ANSI 53
43Benzene0.081 ppmND<0.001 ppm>99%0.005 ppmNSF/ANSI 53
44Carbofuran0.19 ppmND<0.001 ppm>99%0.04 ppmNSF/ANSI 53
45Carbon Tetrachloride0.078 ppmND<0.0018 ppm>98%0.005 ppmNSF/ANSI 53
46Chlorobenzene0.077 ppmND<0.001 ppm>99%0.1 ppmNSF/ANSI 53
47Chloropicrin0.015 ppmND<0.0002 ppm>99%-NSF/ANSI 53
482,4-D0.11 ppmND<0.0017 ppm>98%0.07 ppmNSF/ANSI 53
49Dibromochloropropane0.052 ppmND<0.00002 ppm>99%0.0002 ppmNSF/ANSI 53
50o-Dichlorobenzene0.08 ppmND<0.001 ppm>99%0.6 ppmNSF/ANSI 53
51p-Dichlorobenzene0.04 ppmND<0.001 ppm>98%0.075 ppmNSF/ANSI 53
521,2-Dichloroethane0.088 ppmND<0.0048 ppm95%0.005 ppmNSF/ANSI 53
531,1-Dichloroethylene0.083 ppmND<0.001 ppm>99%0.007 ppmNSF/ANSI 53
54cis-1,2-Dichloroethylene0.170 ppmND<0.0005 ppm>99%0.07 ppmNSF/ANSI 53
55trans-1,2-Dichloroethylene0.086 ppmND<0.001 ppm>99%0.1 ppmNSF/ANSI 53
561,2-Dichloropropane0.080 ppmND<0.001 ppm>99%0.005 ppmNSF/ANSI 53
57cis-1,3-Dichloropropylene0.079 ppmND<0.001 ppm>99%-NSF/ANSI 53
58Dinoseb0.170 ppmND<0.0002 ppm99%0.007 ppmNSF/ANSI 53
59Endrin0.053 ppmND<0.00059 ppm99%0.002 ppmNSF/ANSI 53
60Ethylbenzene0.088 ppmND<0.001 ppm>99%0.1 ppmNSF/ANSI 53
61Ethylene Dibromide (EDB)0.044 ppmND<0.00002 ppm>99%-NSF/ANSI 53
62Haloacetonitriles (HAN)-ND<0.001 ppm98%1 ppmNSF/ANSI 53
63Bromochloroacetonitrile0.022 ppmND<0.0005 ppm98%0.05 ppmNSF/ANSI 53
64Dibromoacetonitrile0.024 ppmND<0.0006 ppm98%0.05 ppmNSF/ANSI 53
65Dichloroacetonitrile0.0096 ppmND<0.0002 ppm98%-NSF/ANSI 53
66Trichloroacetonitrile0.015 ppmND<0.0003 ppm98%0.07 ppmNSF/ANSI 53
67Haloketones (HK)-ND<0.0001 ppm99%0.2 ppmNSF/ANSI 53
68Heptachlor0.025 ppmND<0.00001 ppm>99%0.005 ppmNSF/ANSI 53
69Heptachlor Epoxide0.01076 ppmND<0.0002 ppm98%0.005 ppmNSF/ANSI 53
70Hexachlorobutadiene0.044 ppmND<0.001 ppm>98%0.080 ppmNSF/ANSI 53
71Hexachlorocyclopentadiene0.060 ppmND<0.000002 ppm>99%10 ppmNSF/ANSI 53
72Lindane0.055 ppmND<0.00001 ppm>99%0.1 ppmNSF/ANSI 53
73Methoxychlor0.050 ppmND<0.0001 ppm>99%-NSF/ANSI 53
74Pentachlorophenol0.096 ppmND<0.001 ppm>99%0.005 ppmNSF/ANSI 53
75Simazine0.120 ppmND<0.004 ppm>97%1 ppmNSF/ANSI 53
76Styrene0.150 ppmND<0.0005 ppm>99%0.1 ppmNSF/ANSI 53
771,1,2,2-Tetrachloroethane0.081 ppmND<0.001 ppm>99%-NSF/ANSI 53
78Tetrachloroethylene0.081 ppmND<0.001 ppm>99%0.005 ppmNSF/ANSI 53
79Toluene0.078 ppmND<0.001 ppm>99%1 ppmNSF/ANSI 53
802,4,5-TP (Silvex)0.270 ppmND<0.0016 ppm99%0.05 ppmNSF/ANSI 53
81Tribromoacetic Acid0.042 ppmND<0.001 ppm>98%-NSF/ANSI 53
821,2,4-Trichlorobenzene0.160 ppmND<0.0005 ppm>99%0.07 ppmNSF/ANSI 53
831,1,1-Trichloroethane0.084 ppmND<0.0046 ppm95%0.2 ppmNSF/ANSI 53
841,1,2-Trichloroethane0.150 ppmND<0.0005 ppm>99%0.005 ppmNSF/ANSI 53
85Trichloroethylene0.180 ppmND<0.001 ppm>99%0.005 ppmNSF/ANSI 53
86Trihalomethanes0.300 ppmND<0.015 ppm95%0.080 ppmNSF/ANSI 53
87Xylenes (Total)0.070 ppmND<0.001 ppm>99%10 ppmNSF/ANSI 53

Test Water: TDS: 250-300 ppm, pH: 7.2 to 7.6, Turbidity: <1 NTU

Various chemical salts were used to adjust the required input water contaminant concentration. A single cartridge was fitted in the filter, and 50L of water was filtered during testing. The filtered water and input water were analyzed using IS/APHA/USEPA methods as applicable.

NSF Certificate

nsf 372

Quality Test Report

Test Conditions

  • Input Water Characteristics:
    • TDS: 250–300 ppm
    • pH: 7.2–7.6
    • Turbidity: <1 NTU
  • Various chemical salts were added to achieve the required contaminant concentrations in the input water.
  • Water head in the top container was consistently maintained throughout the test.
  • Sampling was conducted after filtering 50 liters of water.

Observations and Inference

The tested gravity filter equipped with HMR cartridges demonstrated excellent performance, effectively reducing a range of chemical contaminants, including regulated metals, pesticides, and volatile organic compounds (VOCs). The reduction levels achieved were in compliance with both national and international standards, ranging from 74% to 99%.

Methodology

  1. Preparation:

    • HMR cartridges were pre-wetted by soaking in reverse osmosis (RO) water for 1 hour.
    • A single cartridge was installed in the top container of the gravity filter.
  2. Test Procedure:

    • Contaminants such as metals, pesticides, chloroform (as a surrogate for VOCs), and inorganics were added to the test water.
    • The spiked water was introduced into the top container of the gravity filter.
    • A filtration volume of 50 liters was maintained for sampling.
  3. Operational Conditions:

    • The water head in the top container was consistently maintained during filtration.
    • Filtration flow rate ranged from 120 to 220 mL/min.
  4. Analysis:

    • Both the filtered water and input water were analyzed to evaluate the reduction of contaminants.
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